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Expert · Puzzle #443
8
1
6
1
7
4
6
5
3
9
2
7
6
4
2
7
1
8
9
4
3
5
8
6
5
4
"An investment in knowledge pays the best interest." — Benjamin Franklin
"An investment in knowledge pays the best interest." — Benjamin Franklin
"The book of nature is written in the language of mathematics." — Galileo Galilei
"The book of nature is written in the language of mathematics." — Galileo Galilei